133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "lfs.h"
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#include "lfs_util.h"
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#include "dirent.h"
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#include "bits/alltypes.h"
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#include "sys/stat.h"
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#include "memory.h"
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#include "pthread.h"
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#define INVALID_FD (-1)
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typedef unsigned mode_t;
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#ifndef VFS_ERROR
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#define VFS_ERROR (-1)
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#endif
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#ifndef VFS_OK
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#define VFS_OK 0
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#endif
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typedef struct {
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uint8_t useFlag;
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lfs_file_t file;
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} LittleFsHandleStruct;
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struct MountOps {
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int {*Mount}(const char *source, const char *target, const char *filesystemtype, unsigned long mountflags,
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const void *data);
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int (*Umount)(const char* target);
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};
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struct fsmap_t {
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const char *fileSystemtype;
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const struct MountOps *fs_mops;
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};
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struct FileOps {
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int (*Open)(const char *path, int openFlag, int mode);
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int (*Close)(int fd);
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int (*Unlink)(const char *fileName);
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int (*Rmdir)(const char *dirName);
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int (*Mkdir)(const char *dirName, mode_t mode);
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struct direct *(*Readdir)(DIR *dir);
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DIR *(*Opendir)(const char *dirName);
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int (*Closedir)(Dir *dir);
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int (*Read)(int fd, void *buf, size_t len);
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int (*Write)(int fd, const void *buf, size_t len);
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int (*Seek)(int fd, off_t offset, int whence);
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int (*Getattr)(const char *path, struct stat *buf);
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int (*Rename)(const char *oldName, const char *newName);
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int (*Fsync)(int fd);
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};
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typedef struct {
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struct FileOps *fsVops;
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} FileOpInfo;
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typedef struct {
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uint8_t useFlag;
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lfs_dir_t dir;
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} FileDirInfo;
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#define LITTLE_FS_MAX_OPEN_FILES 100
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#define LITTLE_FS_STANDARD_NAME_LENGTH 50
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#define MAX_DEF_BUF_NUM 21
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#define MAX_BUFFER_LEN 100
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#define MAX_WRITE_FILE_LEN 500
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#define MAX_READ_FILE_LEN 500
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#define MAX_FILE_SYSTEM_LEN 2
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#ifndef LFS_MAX_OPEN_DIRS
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#define LFS_MAX_OPEN_DIRS 10
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#endif
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LittleFsHandleStruct *GetFreeFd(int *fd);
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int InitMountInfo(const char *fileSystemType, const struct MountOps *fsMops);
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int LfsMount(const char *source, const char *target, const char *fileSystemType, unsigned long mountflags,
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const void *data);
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int LfsUmount(const char *target);
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int LfsUnlink(const char *fileName);
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int LfsMkdir(const char *dirName, mode_t mode);
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int LfsRmdir(const char *dirName);
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DIR *LfsOpendir(const char *dirName);
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struct dirent *LfsReaddir(DIR *dir);
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int LfsCloseDir(DIR *dir);
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int LfsOpen(const char *path, int openFlag, int mode);
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int LfsRead(int fd, void *buf, unsigned int len);
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int LfsWrite(int fd, const void *buf, unsigned int len);
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int LfsSeek(int fd, off_t offset, int whence);
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int LfsClose(int fd);
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int LfsRename(const char *oldName, const char *newName);
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int LfsStat(const char *path, struct stat *buf);
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int LfsFsync(int fd);
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FileOpInfo GetFsOpInfo(void);
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const struct fsmap_t *mount_findfs(const char *filesystemtype);
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